Omaha Tribe honors the Dr. Susan Board Advisory Committee at the 2018 Omaha Powwow Posted by NCIA Staff | August 27, 2018 | Uncategorized | 0 | Top image – left to right: Walt Duda, Milan Wall, Chairman Mike Wolfe, Char Lahmann, Keith Mahaney Bottom image – left to right: Milan Wall, Walt Duda, Chairman Mike Wolfe, Bruce Sheffield.